[media] cx231xx: Simplify interface checking logic at probe

Just a cleanup patch. Removes one indent level by moving
the return -ENODEV to happen before the device register
logic, if the interface is not the audio/video (int 1).
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

drivers/media/video/cx231xx/cx231xx-cards.c

@@ -844,10 +844,13 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
 	udev = usb_get_dev(interface_to_usbdev(interface));
 	ifnum = interface->altsetting[0].desc.bInterfaceNumber;
 
-	if (ifnum == 1) {
 	/*
-		 * Interface number 0 - IR interface
+	 * Interface number 0 - IR interface (handled by mceusb driver)
+	 * Interface number 1 - AV interface (handled by this driver)
 	 */
+	if (ifnum != 1)
+		return -ENODEV;
+
 	/* Check to see next free device and mark as used */
 	nr = find_first_zero_bit(&cx231xx_devused, CX231XX_MAXBOARDS);
 	cx231xx_devused |= 1 << nr;
@@ -871,8 +874,8 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
 	dev->devno = nr;
 	dev->model = id->driver_info;
 	dev->video_mode.alt = -1;
-		dev->interface_count++;
 
+	dev->interface_count++;
 	/* reset gpio dir and value */
 	dev->gpio_dir = 0;
 	dev->gpio_val = 0;
@@ -947,9 +950,6 @@ static int cx231xx_usb_probe(struct usb_interface *interface,
 			    "matching IAD interface\n");
 		return -ENODEV;
 	}
-	} else {
-		return -ENODEV;
-	}
 
 	cx231xx_info("registering interface %d\n", ifnum);